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pica: Implement decoding of basic fragment lighting components.

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- Diffuse
- Distance attenuation
- float16/float20 types
- Vertex Shader 'view' output
This commit is contained in:
bunnei 2015-09-09 22:39:43 -04:00
parent 281bc90ad2
commit b003075570
5 changed files with 120 additions and 15 deletions
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63
src/video_core/pica.h
View file

@ -241,7 +241,8 @@ struct Regs {
TextureConfig texture0;
INSERT_PADDING_WORDS(0x8);
BitField<0, 4, TextureFormat> texture0_format;
INSERT_PADDING_WORDS(0x2);
BitField<0, 1, u32> fragment_lighting_enable;
INSERT_PADDING_WORDS(0x1);
TextureConfig texture1;
BitField<0, 4, TextureFormat> texture1_format;
INSERT_PADDING_WORDS(0x2);
@ -645,6 +646,22 @@ struct Regs {
INSERT_PADDING_WORDS(0x20);
enum class LightingSampler {
Distribution0 = 0,
Distribution1 = 1,
Fresnel = 3,
Blue = 4,
Green = 5,
Red = 6,
SpotlightAttenuation = 8,
DistanceAttenuation = 16,
};
enum class LightingLutInput {
NH = 0, // Cosine of the angle between the normal and half-angle vectors
LN = 3, // Cosine of the angle between the light and the normal vectors
};
struct {
union LightColor {
BitField< 0, 10, u32> b;
@ -664,17 +681,21 @@ struct Regs {
struct {
// Encoded as 16-bit floating point
u16 x;
u16 y;
u16 z;
u16 unk;
union {
BitField< 0, 16, u32> x;
BitField<16, 16, u32> y;
};
union {
BitField< 0, 16, u32> z;
};
INSERT_PADDING_WORDS(0x3);
// 1.f if 0, otherwise 0.f
BitField<0, 1, u32> w;
} position;
union {
BitField<0, 1, u32> w; // 1.f if 0, otherwise 0.f
BitField<1, 1, u32> two_sided_diffuse; // when disabled, clamp dot-product to 0
};
};
BitField<0, 20, u32> dist_atten_bias;
BitField<0, 20, u32> dist_atten_scale;
@ -722,7 +743,27 @@ struct Regs {
// registers is written to, the behavior will be the same.
u32 lut_data[8];
INSERT_PADDING_WORDS(0x9);
union {
BitField< 1, 1, u32> d0;
BitField< 5, 1, u32> d1;
BitField< 9, 1, u32> sp;
BitField<13, 1, u32> fr;
BitField<17, 1, u32> rb;
BitField<21, 1, u32> rg;
BitField<25, 1, u32> rr;
} abs_lut_input;
union {
BitField< 0, 3, u32> d0;
BitField< 4, 3, u32> d1;
BitField< 8, 3, u32> sp;
BitField<12, 3, u32> fr;
BitField<16, 3, u32> rb;
BitField<20, 3, u32> rg;
BitField<24, 3, u32> rr;
} lut_input;
INSERT_PADDING_WORDS(0x7);
union {
// There are 8 light enable "slots", corresponding to the total number of lights
@ -1095,6 +1136,7 @@ ASSERT_REG_POSITION(viewport_corner, 0x68);
ASSERT_REG_POSITION(texture0_enable, 0x80);
ASSERT_REG_POSITION(texture0, 0x81);
ASSERT_REG_POSITION(texture0_format, 0x8e);
ASSERT_REG_POSITION(fragment_lighting_enable, 0x8f);
ASSERT_REG_POSITION(texture1, 0x91);
ASSERT_REG_POSITION(texture1_format, 0x96);
ASSERT_REG_POSITION(texture2, 0x99);
@ -1109,6 +1151,7 @@ ASSERT_REG_POSITION(tev_stage5, 0xf8);
ASSERT_REG_POSITION(tev_combiner_buffer_color, 0xfd);
ASSERT_REG_POSITION(output_merger, 0x100);
ASSERT_REG_POSITION(framebuffer, 0x110);
ASSERT_REG_POSITION(lighting, 0x140);
ASSERT_REG_POSITION(vertex_attributes, 0x200);
ASSERT_REG_POSITION(index_array, 0x227);
ASSERT_REG_POSITION(num_vertices, 0x228);